Structured light as an enhancement tool for low contrast features in additive manufacturing

Kevin Harding

doi:10.1117/12.2302882

14 May 2018 Structured light as an enhancement tool for low contrast features in additive manufacturing

Kevin Harding

Proceedings Volume 10667, Dimensional Optical Metrology and Inspection for Practical Applications VII; 106670O (2018) https://doi.org/10.1117/12.2302882
Event: SPIE Commercial + Scientific Sensing and Imaging, 2018, Orlando, FL, United States

Abstract

Structured light methods have seen wide use in obtaining 3D measurements of complex shapes from consumer good to aerospace parts. The use of phase shift analysis and improved high speed methods have made the method a viable tool for many time critical production applications. However, not every application requires full three dimensional measurement of the part, but rather just suffers from being difficult to do with simple 2D machine vision methods. For example, just locating bumps or holes on a part that has low contrast features as with many cast parts can be difficult and even unreliable. One of the first applications of structured light was for just such an application. Powder bed additive manufacturing creates a similar low contract challenge today. This paper will explore improved methods off using structured light to reliably determine location and orientation of low contrast features, and discuss several potential applications of the method.

Conference Presentation

Citation Download Citation

Kevin Harding "Structured light as an enhancement tool for low contrast features in additive manufacturing", Proc. SPIE 10667, Dimensional Optical Metrology and Inspection for Practical Applications VII, 106670O (14 May 2018); https://doi.org/10.1117/12.2302882

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available